No you people need to quit driving like idiots. Don’t accelerate too fast, don’t use too much brake, and don’t drive too fast, and you’ll be fine. Accelerate from 0 to 45 in 4 seconds to stop at the next light 200 yards later and go 75 on the highway and of course you’ll do much worse than the EPA rating.
My truck is rated 15/19 and I get 17 on average city/highway mixed. Winter gas takes that down to 16. At 62.5 mph I get over 18mpg on highway with winter gas. With summer gas and at 55 mph I’m sure I could get the 19 mpg (older EPA ratings were 55 mph).